diff options
author | Anton Vorontsov <avorontsov@ru.mvista.com> | 2008-01-24 16:40:07 +0100 |
---|---|---|
committer | Kumar Gala <galak@kernel.crashing.org> | 2008-01-28 15:32:58 +0100 |
commit | f3a2b29d932fbf92e133d814c4873fd15be51abc (patch) | |
tree | df6c2c960540b0f648d2ae3e3648111d500b97c0 /arch/powerpc/sysdev/fsl_soc.c | |
parent | spi_mpc83xx: use brg-frequency for SPI in QE (diff) | |
download | linux-f3a2b29d932fbf92e133d814c4873fd15be51abc.tar.xz linux-f3a2b29d932fbf92e133d814c4873fd15be51abc.zip |
[POWERPC] fsl_spi: stop using device_type = "spi"
Also:
- rename "fsl_spi" to "fsl,spi";
- add and use cell-index property, if found;
- split probing code out of fsl_spi_init, thus we can call
it for legacy device_type probing and new "compatible" probing.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/sysdev/fsl_soc.c')
-rw-r--r-- | arch/powerpc/sysdev/fsl_soc.c | 98 |
1 files changed, 60 insertions, 38 deletions
diff --git a/arch/powerpc/sysdev/fsl_soc.c b/arch/powerpc/sysdev/fsl_soc.c index 6f81dd5eb6d4..e48b20e934ca 100644 --- a/arch/powerpc/sysdev/fsl_soc.c +++ b/arch/powerpc/sysdev/fsl_soc.c @@ -1276,44 +1276,17 @@ arch_initcall(cpm_smc_uart_of_init); #endif /* CONFIG_8xx */ #endif /* CONFIG_PPC_CPM_NEW_BINDING */ -int __init fsl_spi_init(struct spi_board_info *board_infos, - unsigned int num_board_infos, - void (*activate_cs)(u8 cs, u8 polarity), - void (*deactivate_cs)(u8 cs, u8 polarity)) +static int __init of_fsl_spi_probe(char *type, char *compatible, u32 sysclk, + struct spi_board_info *board_infos, + unsigned int num_board_infos, + void (*activate_cs)(u8 cs, u8 polarity), + void (*deactivate_cs)(u8 cs, u8 polarity)) { struct device_node *np; - unsigned int i; - u32 sysclk = -1; - - /* SPI controller is either clocked from QE or SoC clock */ -#ifdef CONFIG_QUICC_ENGINE - sysclk = get_brgfreq(); -#endif - if (sysclk == -1) { - const u32 *freq; - int size; - - np = of_find_node_by_type(NULL, "soc"); - if (!np) - return -ENODEV; - - freq = of_get_property(np, "clock-frequency", &size); - if (!freq || size != sizeof(*freq) || *freq == 0) { - freq = of_get_property(np, "bus-frequency", &size); - if (!freq || size != sizeof(*freq) || *freq == 0) { - of_node_put(np); - return -ENODEV; - } - } - - sysclk = *freq; - of_node_put(np); - } + unsigned int i = 0; - for (np = NULL, i = 1; - (np = of_find_compatible_node(np, "spi", "fsl_spi")) != NULL; - i++) { - int ret = 0; + for_each_compatible_node(np, type, compatible) { + int ret; unsigned int j; const void *prop; struct resource res[2]; @@ -1332,6 +1305,10 @@ int __init fsl_spi_init(struct spi_board_info *board_infos, goto err; pdata.bus_num = *(u32 *)prop; + prop = of_get_property(np, "cell-index", NULL); + if (prop) + i = *(u32 *)prop; + prop = of_get_property(np, "mode", NULL); if (prop && !strcmp(prop, "cpu-qe")) pdata.qe_mode = 1; @@ -1342,7 +1319,7 @@ int __init fsl_spi_init(struct spi_board_info *board_infos, } if (!pdata.max_chipselect) - goto err; + continue; ret = of_address_to_resource(np, 0, &res[0]); if (ret) @@ -1369,13 +1346,58 @@ int __init fsl_spi_init(struct spi_board_info *board_infos, if (ret) goto unreg; - continue; + goto next; unreg: platform_device_del(pdev); err: - continue; + pr_err("%s: registration failed\n", np->full_name); +next: + i++; } + return i; +} + +int __init fsl_spi_init(struct spi_board_info *board_infos, + unsigned int num_board_infos, + void (*activate_cs)(u8 cs, u8 polarity), + void (*deactivate_cs)(u8 cs, u8 polarity)) +{ + u32 sysclk = -1; + int ret; + +#ifdef CONFIG_QUICC_ENGINE + /* SPI controller is either clocked from QE or SoC clock */ + sysclk = get_brgfreq(); +#endif + if (sysclk == -1) { + struct device_node *np; + const u32 *freq; + int size; + + np = of_find_node_by_type(NULL, "soc"); + if (!np) + return -ENODEV; + + freq = of_get_property(np, "clock-frequency", &size); + if (!freq || size != sizeof(*freq) || *freq == 0) { + freq = of_get_property(np, "bus-frequency", &size); + if (!freq || size != sizeof(*freq) || *freq == 0) { + of_node_put(np); + return -ENODEV; + } + } + + sysclk = *freq; + of_node_put(np); + } + + ret = of_fsl_spi_probe(NULL, "fsl,spi", sysclk, board_infos, + num_board_infos, activate_cs, deactivate_cs); + if (!ret) + of_fsl_spi_probe("spi", "fsl_spi", sysclk, board_infos, + num_board_infos, activate_cs, deactivate_cs); + return spi_register_board_info(board_infos, num_board_infos); } |